Simplifying the Mapper Canvas Display

By default, the XQuery Mapper displays all links between source and target document nodes, regardless of whether or not the node associated with a link is currently visible in the Source Document or Target Document pane. Further, as your XQuery code becomes more complex, the mapper canvas can become dense with graphical representations of the functions defined in the code and the links that represent them. Consider this example of XML-Q4.xquery, one of the sample XQuery files in the Examples project installed with Stylus Studio.

Figure 336. Mapper Shows Links to All Nodes, Visible or Not

You can hide links for nodes that are not currently visible in the Source Document or Target Document pane by clicking the Hide Links for Nodes that are not Visible button, as shown in Figure 337:

Figure 337. Simply the Mapper by Hiding Links

When you use this feature, Stylus Studio displays

Links in the Mapper canvas only if both nodes are currently visible in the document panes

Green arrows (like the ones shown in Figure 338) in the document panes if only one of two linked nodes is currently visible.

Figure 338. Arrows Identify Partially Available Links

Other Mapper Display Features

In addition to displaying links for only those nodes that are visible in both document panes, you can use the document node shortcut menu (right-click on a node in a document pane) to